What I did was covered the pinion part that goes into the tranny in grease, used a tire jack to keep it level, forced it in there, then used 2 hands to really work it in there, put the hub back on, hit the 32 mm with a rubber mallet, then did the 2 hand thing again, hit it with the mallot 1 more time, then used a breaker bar with a 10 foot pole from an old metal fence and stood on it untill it could hold my weight. Hasn't budged yet.

Don't know if it was ALL necessary, but the last thing you want is the axle pinions getting eaten up in the transmission.